Product information

ABB TurbochargingVTC

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Proven reliability over the yearsThe VTC is long-established and proven in applications wherespace restrictions call for a compact turbocharger.

VTC high-performance turbochargers are designed for dieselengines with rated outputs from 1000 up to 3200 kW per turbocharger, where restricted space demands a compact turbocharger.

The aerodynamic design of the rotating components, i. e. theturbine and compressor, of the VTC turbochargers is thesame as for the VTR. .4, which is noted for high overall effi-ciency.

To enable a space-saving design it was decided to use sepa-rately lubricated plain bearings between the turbine and compressor. The resulting reduction in overall length permits a compact arrangement on the engine and free flow of theexhaust gases to the turbine.

The plain bearings are lubricated via the engine’s lube oil system. No postlubrication is needed when the engine is shut down. However, when the engine is started up, the turbocharger, like the engine, requires prelubrication.

VTC turbochargers are particularly well suited for use ondiesel engines where compactness is needed, such as on locomotives, in stationary power plants and on mobileemergency gensets.

The VTC turbocharger has been designed to enable the rotor to be dismantled with its bearings as a whole, without the gaslines having to be disconnected, and to be easily removedfrom the gas casing. The same applies to the nozzle ring andthe associated shroud ring. This greatly simplifies mainte-nance and enables all bearings and running parts to beinspected without the gas casings having to be dismantled.

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Benefits that add upCustomers and end-users can rely on the world’s premier salesand service support network.

Major benefits

Close contact with the diesel engine industry and a wealth of field

experience enable ABB to provide expert advice on all questions

connected with turbocharging.

ABB application engineers are highly experienced specialists who can

be called in to advise on solutions to any problems. Since ABB is a totally

independent company, it can be consulted with confidence at an early

stage.

VTC turbochargers are of extremely robust design, dimensioned to last

the useful life of the engine and undemanding in operation.

High reliability is achieved through a commitment to highest

manufacturing quality and close tolerances. All spare parts can be

used without re-machining.

All VTC turbochargers are provided with water connections at the

compressor end, enabling them to be washed with water in service.

As back-up in all operational questions, ABB has a special team of

experienced engineers permanently on call.

ABB’s worldwide service network ensures fast, efficient response

around the clock.

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The diagram shows the field of application of the various sizesof VTC turbocharger and allows a rough choice of the size ofVTC turbocharger to suit a given diesel engine.

The ranges of application of the VTC turbocharger sizesVTC 254 and 304 are largely the same as those of the corre-sponding sizes in the VTR range as the active components(turbine and compressor) of the two turbochargers are identical.

Power range

Volume flow

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For a specific application, the definitive size of turbocharger tobe chosen as well as the correct choice of turbine and com-pressor parts (characteristic and size of blades, cross-sectionof the stationary vanes, size of compressor impeller and dif-fuser) is best decided in consultation with one of our applica-tion engineers.

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Design featuresCasing dimensions

The maximum rate of water flow shown for the gas outlet casing assumes a gas temperature of 600 °C and a coolingwater temperature of 65 °C at the inlet.

To ensure optimum mounting of the turbocharger on theengine, the air and gas casings are vertically split and can be turned relative to one another. The fixing feet attached to the gas outlet casing can also be turned to the desiredmounting position.

Design variants

Gas inlet 1 or 2 gas inlets radial; 1, 2 or 4 gas inlets axial

Air outlet 1 or 2 air outlets

Air inlet Air suction branch axial or radial, or filter-silencer. By using

a filter designed as a surrounding jacket, the larger dirt

particles will be extracted from the incoming air. Noise is

absorbed by felted segments which provide support for

the whole. These silencers achieve high noise reduction for

only a low pressure drop.

Type A B C D E F G H Weight kg* Water l /s Oil l /min

VTC 254 315 739 720 704 350 340 300 550 500 1.00 25

VTC 304 326 853 851 880 415 405 340 655 850 1.32 30

* including a filter silencer without cooling water

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ABB Turbocharging Service network

ABB Turbo Systems Ltd

Bruggerstrasse 71 aCH-5401 Baden/SwitzerlandPhone: +41 58 585 7777Fax: +41 58 585 5144E-mail: turbocharging@ch.abb.com

www.abb.com/turbocharging

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